function Func(){var a;return a=[0,1,2,3,4],a.join("-")}function yes1(){return"one,two,three"}function yes2(){return"one,2,three"}function yes3(){return"one-2-three or 42 more"}function yes4(){return"and a 1 and a 2 and a 3 [music]"}function yes5(){return"missing [1,,3] number 2"}function no1(a){return["one","two","three"].join(a)}function no2(){return["one","two","three"].join(",",42)}function no3(a){return["one","two","three",a].join(",")}function no4(){return["a","b","c"].join(" always comes before ")}function no5(){return["one",-1234567890.1234567,"three"].join()}function no6(){return[1,2,].join()}